You were playing on your server as if nothing had happened, you built a house, a farm of cows and pigs, you got dogs, when suddenly a player with the nickname “Mr. Happy” came to your Minecraft server. He writes “Hello :)” (By the way, this happens in Minecraft)You immediately thought that he was kind of, well...strange...How could he come in when you were playing single player mode?..Is it like a hacker or something?..You write "um well hello?"...He wrote in the chat "let's be friends :)?"